是Let him know 还是Let he know?

是Let him know 还是Let he know? if he ______ me tomorrow,I would let him know you need let him know it Why don't you ____? A let him to know A. let him to know B. let me know if you need__help.是any还是some? Let me know if he _____you again. In case he ______ ,let me know. 英语虚拟语气题3.If he _________ me tomorrow,I would let him know.A. i don't know who he is_i let him in a.and b.or c.so If you let him try and then he will know all about it.改为祈使句 I felt it necessary to let him know he was wrong （改为近义句） him,let,the,answer,know(l连词成句）